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Washington D.C. to Seattle-Tacoma International Airport flight
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Cheap Flights from Washington D.C. to Seattle-Tacoma International Airport

  • One way
  • Round-trip
sortSort by: Lowest Price
  • Sort by: Lowest Price
  • Sort by: Earliest Flight
      • DCA07:00
        27h 20m
        1 stop
        SEA07:20
        Washington D.C. - Seattle|Sun, Apr 28|Frontier Airlines
        US$62US$133
        53% OFF
        53% OFF
        US$133US$62
      • DCA07:00
        28h 55m
        2 stops
        SEA08:55
        Washington D.C. - Seattle|Tue, Apr 30|Frontier Airlines
        US$72US$133
        45% OFF
        45% OFF
        US$133US$72
      • DCA07:00
        16h 32m
        1 stop
        SEA20:32
        Washington D.C. - Seattle|Sat, Apr 27|Frontier Airlines
        US$78US$133
        41% OFF
        41% OFF
        US$133US$78
      • DCA12:50
        31h 8m
        1 stop
        SEA16:58
        Washington D.C. - Seattle|Tue, May 7|Frontier Airlines
        US$80
        US$80
      • DCA07:00
        12h 58m
        1 stop
        SEA16:58
        Washington D.C. - Seattle|Wed, May 1|Frontier Airlines
        US$83
        US$83
      • DCA12:50
        31h 13m
        1 stop
        SEA17:03
        Washington D.C. - Seattle|Thu, May 2|Frontier Airlines
        US$85
        US$85
      • DCA12:50
        11h 44m
        1 stop
        SEA21:34
        Washington D.C. - Seattle|Fri, May 10|Frontier Airlines
        US$90
        US$90
      • DCA12:50
        21h 30m
        1 stop
        SEA07:20
        Washington D.C. - Seattle|Sun, May 5|Frontier Airlines
        US$92
        US$92
      • DCA07:00
        17h
        1 stop
        SEA21:00
        Washington D.C. - Seattle|Wed, May 15|Frontier Airlines
        US$93
        US$93
      • DCA16:45
        8h 13m
        1 stop
        SEA21:58
        Washington D.C. - Seattle|Tue, Apr 30|American Airlines
        US$96
        US$96
      • WAS13:00
        3h 5m
        Direct
        SEA14:00
        Washington D.C. - Seattle|Thu, May 2|Frontier Airlines
        Find More Flights
        Find More Flights

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Selected Airlines from Washington D.C. to Seattle-Tacoma International Airport
Frontier Airlines
From US$62
American Airlines
From US$96
Alaska Airlines
From US$123
Delta Air Lines
From US$130
Sun Country Airlines
From US$140
Jetblue Airways
From US$145
United Airlines
From US$152
Southwest Airlines
From US$153
Southern Airways Express
From US$177
ANA airlines
Find more flights and airlines

There are 2 airport(s) in Washington D.C.. Discover the top routes now!

  • 3.44 km from downtown Washington D.C.CheapestClosest
    Ronald Reagan Washington National Airport
    Tickets From
    US$62
  • 36.68 km from downtown Washington D.C.
    Dulles International Airport
    Tickets From
    US$123
Flight Schedule from Washington D.C. to Seattle-Tacoma International Airport
Flight info.
Departure
Arrival
Weekly Schedule

  1. AS351

    Alaska Airlines

    07:00

    IAD

    5.9h

    Direct

    09:55

    SEA

    SMTWTFS
    Search

  2. AS499

    Alaska Airlines

    07:02

    IAD

    5.7h

    Direct

    09:44

    SEA

    SMTWTFS
    Search

  3. AS277

    Alaska Airlines

    07:10

    IAD

    5.4h

    09:33

    LAX

    SM-WTFS
    Search

  4. AS1219

    Alaska Airlines

    11:10

    LAX

    2.8h

    14:00

    SEA

    SMTWTFS

  5. DL748

    Delta Air Lines

    07:30

    IAD

    5.8h

    Direct

    10:20

    SEA

    SMTWTF-
    Search

  6. F9687

    Frontier Airlines

    12:59

    DCA

    4.0h

    15:00

    DEN

    SMTWTFS
    Search

  7. F94647

    Frontier Airlines

    13:51

    DEN

    2.6h

    15:26

    SEA

    S----F-

  8. AS507

    Alaska Airlines

    16:16

    IAD

    5.3h

    18:34

    SAN

    SMTWTFS
    Search

  9. AS1199

    Alaska Airlines

    20:50

    SAN

    2.9h

    23:44

    SEA

    S-TWTFS

  10. AA5617

    American Airlines

    16:30

    DCA

    1.0h

    17:32

    PHL

    SMTWT-S
    Search

  11. AA2361

    American Airlines

    19:20

    PHL

    6.3h

    22:40

    SEA

    SMTWTFS

  12. DL952

    Delta Air Lines

    17:45

    IAD

    5.9h

    Direct

    20:38

    SEA

    SMTWTFS
    Search

  13. AS406

    Alaska Airlines

    18:37

    IAD

    5.9h

    Direct

    21:30

    SEA

    SMTWTFS
    Search

  14. SY224

    Sun Country Airlines

    19:05

    IAD

    2.9h

    20:56

    MSP

    S-TW--S
    Search

  15. SY285

    Sun Country Airlines

    15:07

    MSP

    3.9h

    16:59

    SEA

    S-TWT--
Find more flights and airlines

Flight Info of Flights from Washington D.C. to Seattle-Tacoma International Airport

Cheapest round-trip ticket price

$175

Cheapest nonstop flight price

$62

Off-season for travel

January

Peak season for travel

July

FAQs for Washington D.C. to Seattle-Tacoma International Airport Flights

  • When are flight tickets from Washington D.C. (WAS) to Seattle (SEA) the cheapest?

    Airlines adjust prices for flights from Washington D.C. to Seattle based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.

  • How much do flights from Washington D.C. (WAS) to Seattle (SEA) cost?

    According to Trip.com's data, the lowest price is around $420.

  • How long does it take to fly from Washington D.C. (WAS) to Seattle (SEA) and what is the distance?

    It takes around 5 hours 49 minutes to fly from Washington D.C. (WAS) to Seattle (SEA).

  • What is the transportation method from the main airport to downtown in Seattle?

    • The distance from Seattle-Tacoma International Airport to downtown is about 17km. It takes about 30 minutes by taxi.

  • What are the most popular airlines that fly from Washington D.C. (WAS) to Seattle (SEA)?

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